Hercynite and Wavellite Physical Properties

Hercynite

Wavellite

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Physical Properties

Tenacity

Solubility

insoluble

Durability

Specific Gravity

4.392.36

1 7.18

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Fracture

Uneven

Uneven, Subconchoidal, Fibrous

Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct

[110] perfect, [101] good, [010] distinct

Mohs Hardness

7.5-83.5-4

2 10

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Chemical Composition

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Hercynite and Wavellite Chemical Formula

While comparing Hercynite and Wavellite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Hercynite and Wavellite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Wavellite- Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hercynite and Wavellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Wavellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Wavellite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.36 whereas that of Wavellite is 2.36.